Formula: (Mn,Fe,Ca,Mg)3(PO4)2
Origin of name: For Alexei Beus, Russian geochemist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Reddish-brown
Diaphaneity: Translucent
Luster: Vitreous
Habit: Crystals prismatic; rough, large
Hardness: 5
Specific gravity: 3.70
Cleavage: 2; {010} good, {100} fair
Tenacity:
Streak: Pale pink
Synonyms/varieties:
Comments:
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